From cc176690229ef17ff456b8d6082baa3f08d65662 Mon Sep 17 00:00:00 2001
From: Naushir Patuck <naush@raspberrypi.com>
Date: Thu, 14 Jan 2021 09:18:42 +0000
Subject: [PATCH] uapi: bcm2835-isp: Add colour denoise configuration

Add a configuration structure for colour denoise to the bcm2835_isp
driver.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
---
 include/uapi/linux/bcm2835-isp.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

--- a/include/uapi/linux/bcm2835-isp.h
+++ b/include/uapi/linux/bcm2835-isp.h
@@ -31,6 +31,8 @@
 				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0007)
 #define V4L2_CID_USER_BCM2835_ISP_DPC		\
 				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0008)
+#define V4L2_CID_USER_BCM2835_ISP_CDN \
+				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0009)
 
 /*
  * All structs below are directly mapped onto the equivalent structs in
@@ -176,6 +178,31 @@ struct bcm2835_isp_gamma {
 };
 
 /**
+ * enum bcm2835_isp_cdn_mode - Mode of operation for colour denoise.
+ *
+ * @CDN_MODE_FAST:		Fast (but lower quality) colour denoise
+ *				algorithm, typically used for video recording.
+ * @CDN_HIGH_QUALITY:		High quality (but slower) colour denoise
+ *				algorithm, typically used for stills capture.
+ */
+enum bcm2835_isp_cdn_mode {
+	CDN_MODE_FAST = 0,
+	CDN_MODE_HIGH_QUALITY = 1,
+};
+
+/**
+ * struct bcm2835_isp_cdn - Colour denoise parameters set with the
+ *			    V4L2_CID_USER_BCM2835_ISP_CDN ctrl.
+ *
+ * @enabled:	Enable colour denoise.
+ * @mode:	Colour denoise operating mode (see enum &bcm2835_isp_cdn_mode)
+ */
+struct bcm2835_isp_cdn {
+	__u32 enabled;
+	__u32 mode;
+};
+
+/**
  * struct bcm2835_isp_denoise - Denoise parameters set with the
  *				V4L2_CID_USER_BCM2835_ISP_DENOISE ctrl.
  *
